WebSocket CDK Python

This is a basic implementation of websockets using CDK

It's based on the work of simple-websockets-chat-app and @mrpackethead

Install

$ python3 -m venv .venv

$ source .venv/bin/activate

If you are a Windows platform, you would activate the virtualenv like this:

% .venv\Scripts\activate.bat

$ pip install -r requirements.txt

At this point you can now synthesize the CloudFormation template for this code.

$ cdk synth

If you're using CDK for the first time in your account don't forget to initialize it.

Deployment

$ cdk deploy

After the completion of this command go in the API Gateway Console and deploy the API.

Usage

npm install wscat

Connection

wscat -c wss://YOUR_API_ID.execute-api.eu-west-1.amazonaws.com/prod

Set username

{"action":"setusername", "data":"user1"}

Send message

{"action":"sendmessage", "data":"hello world"}